First of all i think the arduino is a great project, let me be clear on that.
I was wondering dough, about the main core chip, atmega328; it is a pretty old chip from 1996, its is 16 years old now. Looking at the manufacturer of this chip Amtel, there have been a lot new of chips since. Meanwhile new micro PC designs resulted in the rasberi-pi; which although cannt do analog read, it has about 20 digital pins. Besides it has usb, ethernet, sound, video, card reader, it also costs more, but not an alarming level, its pretty close in fact.
I think for a micro controller video isnt that important, but might attract more people who want to program with it. However ethernet (or wifi), and usb, and a card reader; might be the bare minimum for a nextgen product, optional is low power consumption, or another option (version) to be able to handle 24 or 30v input output (automotive)
The latest official release is dough the arduino uno.. still using an atmega328 equivalent. To stay popular, maybe something more is needed.
Is there progress or a general direction goal to a minimal microprocessor slightly more computer like next gen.. a beta board design perhaps?